#include <signal.h>
#include <stdio.h>

extern const char* const sys_siglist[];

int main(void)
{
    for (int i = 0; i < 64; i++)
    {
        const char* signame = sys_siglist[i] != NULL ? sys_siglist[i] : "not set";
        printf("%d: %s\n", i, signame);
    }
}